Ok, so about 6 weeks ago, I pulled up to a stoplight next to this Scion TC. He revved his engine and I was just like "why not?" and I decided I'd rev mine too.... but I forgot to put it in neutral
So I took it to the mechanic and he fixed whatever was wrong with it (I forgot what he said exactly)
But first gear jolts even harder than before. Could anybody give me some help on what might be wrong?